package com.qf.day11;

import java.util.Properties;

public class SystemDemo {
    public static void main(String[] args) {
        Properties properties = System.getProperties();
//        System.out.println(properties);
        properties.forEach((k,v)->{
            System.out.println(k+":"+v);
        });
            System.out.println(System.getenv());;
    }
}
